In this paper, 2D models for direct carbon solid oxide fuel cells (DC-SOFCs) with in situ catalytic steam-carbon gasification reaction are developed. The simulation results are found to be in good agreement with experimental data. The performance of DC-SOFCs with and without catalyst are compared at different operating potential, anode inlet gas flow rate and operating temperature. It is found that adding suitable catalyst can significantly speed up the in situ steam-carbon gasification reaction and improve the performance of DC-SOFC with H₂O as gasification agent. The potential of syngas and electricity co-generation from the fuel cell is also evaluated, where the composition of H₂ and CO in syngas can be adjusted by controlling the anode inlet gas flow rate. In addition, the performance DC-SOFCs and the percentage of fuel in the outlet gas are both increased with increasing operating temperature. At a reduced temperature (below 800 °C), good performance of DC-SOFC can still be obtained with in-situ catalytic carbon gasification by steam. The results of this study form a solid foundation to understand the important effect of catalyst and related operating conditions on H₂O-assisted DC-SOFCs.

在本文中，开发了具有原位催化蒸汽-碳气化反应的直接碳固体氧化物燃料电池（DC-SOFC）的二维模型。仿真结果与实验数据吻合良好。比较了在不同工作电势，阳极入口气体流速和工作温度下，有无催化剂的DC-SOFC的性能。发现添加合适的催化剂可以显着加速原位蒸汽-碳气化反应，并改善以H ₂ O为气化剂的DC-SOFC的性能。还评估了来自燃料电池的合成气和热电联产的潜力，其中H ₂的组成合成气中的CO可以通过控制阳极入口气体流速来调节。此外，性能DC-SOFC和出口气体中的燃料百分比都随着工作温度的升高而增加。在降低的温度（低于800°C）下，通过蒸汽进行原位催化碳气化仍能获得良好的DC-SOFC性能。这项研究的结果为了解催化剂和相关操作条件对H ₂ O辅助DC-SOFC的重要影响奠定了坚实的基础。